211321230040 has 16 divisors (see below), whose sum is σ = 475472767680. Its totient is φ = 84528492000.

The previous prime is 211321230037. The next prime is 211321230059. The reversal of 211321230040 is 40032123112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2641515336 + ... + 2641515415.

It is an arithmetic number, because the mean of its divisors is an integer number (29717047980).

Almost surely, 2^211321230040 is an apocalyptic number.

211321230040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211321230040 is an abundant number, since it is smaller than the sum of its proper divisors (264151537640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211321230040 is a wasteful number, since it uses less digits than its factorization.

211321230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283030762 (or 5283030758 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211321230040 its reverse (40032123112), we get a palindrome (251353353152).

The spelling of 211321230040 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred thirty thousand, forty".